[PATCH] Output AAC as M4A for iTunes with metadata tags (Shevek)

[richard]

On 28 March 2011 Jon Davies wrote:

>
> What if your marantz cd player doesn't understand the atom that 
> contains the thumbnail (which is added AtomicParsley in Shevek's 
> patch), and it spends 25s trying to play this as audio, failing to 
> decode and hence playing mute instead?

My test showed that not to be the case. I commented out the line in
Sheveks patch which adds the thumbnail:

> push @cmd, "--artwork", $prog->{thumbfile} if -f $prog->{thumbfile};

I think I've found what EasyTag does to change an m4a file to make it
playable.

In EasyTag the box headed MP4/AAC/File shows a default m4a file
(get_iplayer m4a file) with a bitrate of ~0 kb/s (which is incorrect).
If you save the default m4a file (without changing anything) EasyTag
asks whether you want to write to the tag (although you have not made
any changes). Click Yes. Exit EasyTag. Open EasyTag and go to the
default m4a file and the bitrate changes to ~128 kb/s and the file size
has changed (increased).